<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<h1>hello worlds</h1>
<form action="/demo/file/upload" method="post" enctype="multipart/form-data">
    <p><input type="file" name="file"></p>
    <p><input type="submit" value="submit"></p>
</form>

</body>
</html>